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In determining automobile mileage ratings, it was found that the mpg ( X ) for a certain model is normally distributed, with a mean of 30 mpg and a standard deviation of 1.5 mpg. Find the following:
a. P(X 6 28)
b. P(28 6 X 6 32)
c. P(X 7 33)
d. P(X 6 31)
e. The mileage rating that the upper 5% of cars achieve
Packages from packing machine have a mass, which is normally distributed with mean 200g and standard deviation 2g. Find the probability that the package from the machine weighs
Samples of n=4 items each are taken from a manufacturing process at regular intervals. A quality characteristic is measured, and x-bar and R values are calculated for each sample. After 25 samples, we have:
Seven employees were included from Area A, 9 from Area B and 12 from Area C. The test statistic was computed to be 4.91. What can we conclude at the 0.05 level?
Overtime happens after eight hours of work on given day. Determine the probability that letter carrier works overtime on any given day?
A state representative is reported as saying that about 10% of reported auto thefts involve owners whose cars have not really been stolen, but who are trying to defraud their insurance company.
what are your thoughts and research regarding issues facing us? what decision making process needs to be implemented? i
Various temperature measurements are recorded at different times for a particular city. The mean of 25C is obtained for 60 temperatures on 60 different days. Assuming that pop st/deviation is 1.5C, test the claim that the population mean is 23C. Use ..
Find the moment-generating function, MX(u) , of the Gaussian mixture. - Use the moment-generating function to find the mean of the Gaussian mixture.
a pump adds 48000 ftlbs to a steady flow rate of 5 ft3s . the fluid is water at 60 f. at the entrance to the pump the
It has been determined that the mean life is 1000 hours and the standard deviation is 50 hours. It can be concluded that at least 89% of the bulbs will last between?
A logistic regression model was used to assess the association between CVD and obesity. P is defined to be the probability that the people have CVD.
test the given claim using the traditional method of hypothesis testing. assume that the sample has been randomly
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